In the current field, extruders are generally divided into ordinary building block twin-screw extruders and split twin-screw extruders. In comparison, the advantages of split twin-screw extruders are more prominent. The following article briefly introduces the main advantages of twin-screw extruders:
1. Self-cleaning performance is good. The two screws of the twin-screw are meshed. In the mutual friction with the material, they can reduce the occurrence of material stagnation. The self-cleaning performance of the co-rotating twin-screw is stronger.
2. Observation is very convenient. The split twin-screw extruder is easy to open, you can observe the degree of wear of the threaded elements, bushings and other parts in the barrel at any time, and replace them in a timely and effective manner to avoid product waste caused by parts damage.
3. Reduce production costs. The processing area of the split twin-screw extruder can be opened, which has greater advantages in the convenience of observing product processing and material color changes, and can analyze the mixing process by observing the melt distribution on the entire screw. Ordinary twin-screw extruders need to use a lot of cleaning materials to change colors, but in some split twin-screw extruders, the barrel can be quickly opened for manual cleaning to reduce the use of cleaning materials.
4. Improve labor efficiency. When performing mechanical maintenance, it is usually necessary to remove the heating and cooling system of the ordinary twin-screw extruder. For the twitching screw, the split twin screw extruder can open the barrel for maintenance, just remove the necessary bolts and rotate the turbine box handle device to lift the upper half of the barrel, which can save most of the time, at the same time weaken the labor intensity of maintenance workers, and also reduce production shutdown caused by equipment wear.
5. High torque and high speed. By observing the development trend of twin-screw extruders, it can be seen that the field is currently developing in the direction of high torque, high speed, and low energy consumption. For example, the increase in productivity brought about by high speed is especially reflected in the twin-screw extruder, which makes it more suitable for the production and processing of high-viscosity and heat-sensitive materials.
6. High yield and high quality. Compared with single-screw extruders, twin-screw extruders, especially intermeshing twin-screw extruders, perform better in solid and melt conveying of materials, and have the advantages of high yield, high quality, and efficiency. Because the twin-screw engagement can more fully mix the materials.
Since its birth, the twin-screw extruder has undergone changes and innovations time and time again. At present, the twin-screw extruder has become a more representative processing equipment in the polymer blending modification industry. Throughout the entire historical process, it is not difficult to see that behind every change, the ever-changing development needs of the twin-screw extruder market are reflected. With the continuous improvement of new market demand, the technological development of twin-screw extruders has been continuously improved and upgraded.
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